Daley Blind has struggled for regular game time since Jose Mourinho took over from Van Gaal back in 2016.
Van Gaal, who spent two seasons as United’s manager, believes Blind should leave the club and join the Catalan giants.
“Daley Blind is better off going to Barcelona, than staying with Man United.
“He is not even on the bench for United sometimes. Daley can play in more than one position and at Barcelona he would never be sat in the stand.
“I think Daley would fit in better at Barcelona anyway. His level and his style of play is more suited to Spain than England.
“He can operate as a central defender who builds up the play. He can be a defensive midfielder or an attacking left back. Daley can do it all.’’